A continuous blood purification temperature control device

Abstract

The utility model discloses a continuous blood purification temperature control device, which controls the temperature of replacement fluid, dialysate or blood filter, performs constant temperature treatment or controls it in a low temperature state, and reduces complications caused by low body temperature or high body temperature. The key points of its technical solution are that it includes a sleeve, a temperature control layer and a control device, the sleeve is made of flexible material, the temperature control layer is arranged on the inner layer of the sleeve, the control device is connected to the temperature control layer to control the real-time temperature, and the sleeve can be wrapped around and fixed to the outside of the existing replacement fluid or dialysate and blood filter. Through the cooperation of the control device and the temperature control layer, as well as the wrapping and fixing method of the sleeve, the liquid in the replacement fluid or dialysate and the blood filter is continuously in a specific temperature environment, and low body temperature is effectively avoided and can be suitable for sub-hypothermia treatment, and is suitable for different models of blood filters.

Description

Technical Field

[0001] The utility model relates to the medical field, in particular to a continuous blood purification temperature control device. Background Art

[0002] Continuous blood purification (CBP) refers to mimicking the physiological functions of human kidneys, removing waste, maintaining fluid balance, and maintaining continuous stability of the internal environment. As a means of multi-organ protection and life support, CBP has been widely used in the treatment of critically ill patients such as acute kidney injury, sepsis, burns, and heat stroke. During continuous blood purification treatment, the patient's blood is drawn out of the body and continuously and stably controls azotemia, continuously removes toxins and inflammatory factors, and regulates water, electrolytes, and acid-base balance through the diffusion, adsorption, and convection of the blood filter before being returned to the patient's body.

[0003] Hypothermia in CBP can often cause hemodynamic disturbances, coagulation disorders, increased cardiovascular adverse events, etc. in critically ill patients, and can also affect patient prognosis and increase mortality. The main causes of hypothermia are the high capacity of the blood filter, the long blood circuit, the low temperature and large volume of the replacement fluid or dialysate, the fast ultrafiltration rate, and the long duration. That is, about 50% of patients experience hypothermia (<35.5℃) during CBP treatment and the duration exceeds 24 hours. It is the most common complication of CBP.

[0004] Therefore, the replacement fluid or dialysate and the blood filter need to be heated to about 35-37°C. Generally, hospitals will use a constant temperature heating box to put the finished product original configuration liquid bag into the box for heating.

[0005] However, due to the large size of this type of incubator and the need to wait until it is heated before it can be taken out, it has poor flexibility in use. In addition, after the replacement fluid or dialysate is taken out of the incubator, the temperature will be affected by the external environment. Generally, two bags of replacement fluid (8L) are used at the same time for about 2-4 hours. During the long-term CBP process, it has been cooled to room temperature, causing the body temperature to drop.

[0006] Although the blood return line is heated during CBP treatment, the heat added to some lines is not enough to replenish the lost heat, and a large amount of unheated replacement fluid and dialysate enter the returned blood, which causes the body temperature to drop, leading to hypothermia. Traditional quilts, hot water bottles, and input liquid heating have been confirmed by relevant studies to have no significant effect on rewarming hypothermia caused by CBP; inflation warming, airway rewarming, etc. are effective for mild hypothermia (33~36 ℃), but not for moderate (28~32 ℃) and severe (<28 ℃) hypothermia. Moderate and severe hypothermia require active internal circulation for rewarming, namely CBP and extracorporeal membrane oxygenation (ECMO). ECMO has been confirmed to be the best way to rewarm with active internal circulation, but it is expensive and traumatic; CBP is economical and less traumatic.

[0007] In addition, in clinical practice, CBP hypothermia can be used to provide mild hypothermia treatment for patients with brain injury after cardiopulmonary resuscitation, thereby reducing oxygen consumption, protecting brain tissue, and improving nervous system function; CBP can be used to provide cooling treatment for patients with heat shock, effectively preventing high temperature damage and reducing metabolism.

[0008] Therefore, a flexible heating or cooling device is needed, which can assist staff in continuously monitoring the temperature of patients, replacement fluid or dialysate and blood filter for a long time, so that staff can dynamically adjust the temperature setting in time to prevent the body temperature from rising too high or falling too low, that is, deviating from the preset target body temperature. Utility Model Content

[0009] The purpose of the utility model is to provide a continuous blood purification temperature control device, which can continuously maintain the replacement fluid or dialysate at a suitable temperature during CBP treatment, and can effectively avoid a series of adverse events caused by hypothermia in patients while improving the patient's comfort. The temperature of the replacement fluid or dialysate can also be controlled at a relatively low temperature state, so as to be suitable for hypothermia treatment of some patients.

[0010] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0011] A continuous blood purification temperature control device comprises a sleeve, a temperature control layer and a control device. The sleeve is made of a flexible material, the temperature control layer is arranged on the inner layer of the sleeve, and the control device is connected to the temperature control layer to control the real-time temperature. The sleeve can be wrapped around and fixed to the outer side of the existing finished product original configuration liquid bag and blood filter.

[0012] Compared with the prior art, the continuous blood purification temperature control device using the above technical solution has the following beneficial effects:

[0013] 1. The continuous blood purification temperature control device of the utility model is adopted, through the cooperation of the control device and the temperature control layer, and by utilizing the wrapping and fixing method of the sleeve, the replacement fluid or dialysate and the blood filter are continuously kept in a specific temperature environment, thereby achieving the purpose of heating and maintaining the replacement fluid or dialysate and the blood filter during CBP treatment, avoiding a series of adverse events caused by a drop in human body temperature; and the replacement fluid or dialysate and the blood filter can be kept in a specific low-temperature environment through the control device, so that it is suitable for the cooling treatment of sub-hypothermia of patients with brain injury after cardiopulmonary resuscitation and patients with heat shock.

[0014] Second, because the sleeve and CBP treatment equipment and items are relatively independent, they can be disassembled or assembled separately to disinfect and sterilize different CBP treatment equipment, increase the reuse rate, and effectively reduce the economic burden on the hospital.

[0015] 3. The continuous blood purification temperature control device of the utility model can continuously monitor the temperature of the patient, the replacement fluid or dialysate and the blood filter, and assist the staff to dynamically adjust the temperature setting in time during the temperature control process to avoid the temperature rising too high or falling too low, deviating from the preset target body temperature, and the temperature control method is simple, reducing the patient's temperature control and hospitalization costs.

[0016] Preferably, the sleeve body is provided with a plurality of through grooves in the middle part through which the hanging holes of the finished product original configuration liquid bag can extend, the sleeve body can be wrapped on the surface of the finished product original configuration liquid bag from top to bottom, and the lower side of the sleeve body is provided with a gap through which the catheter can pass. Through the preset through grooves and gaps, it is convenient to hang the finished product original configuration liquid bag, and to facilitate the input of replacement fluid or dialysate into the patient's body while keeping the temperature constant or low.

[0017] Preferably, the temperature control layer is a circulation pipe arranged in the sleeve, and the circulation pipe is meandering and folded and distributed inside the sleeve, the sleeve is provided with a liquid inlet and a liquid outlet, the two ends of the circulation pipe are respectively connected to the liquid inlet and the liquid outlet, a variable temperature water tank is provided in the control device, one side of the variable temperature water tank is connected to the liquid inlet through a liquid guide tube, and the other side of the variable temperature water tank is connected to the liquid outlet through a return liquid pipe.

[0018] Through the meandering circulation tube, liquid of a specific temperature is circulated in the sleeve, so that the heat inside the sleeve is evenly dispersed in the sleeve, or part of the heat of the replacement fluid or dialysate is taken away by the circulating cold water, thereby achieving the purpose of temperature regulation. In addition, the temperature inside the sleeve can be maintained by tightly wrapping the sleeve and continuously flowing liquid in the circulation tube.

[0019] Preferably, a cooling patch is also provided in the sleeve, and the cooling patch is connected to the control device through a circuit, and the cooling patch is isolated from the temperature control layer. The relatively independent cooling patch is used to wrap and cover the whole body to achieve the purpose of rapid cooling and maintaining low temperature of the replacement fluid or dialysate. Similarly, the corresponding heating patch can be adapted in the sleeve according to the use requirements to quickly reach the required temperature.

[0020] Preferably, the housing or control device is provided with a temperature sensor and a temperature control module. The temperature sensor can monitor the heating temperature in real time, and the temperature control module can coordinate with the temperature data to adjust the heating situation in real time and flexibly to further ensure a constant temperature or a specific low temperature effect.

[0021] Preferably, one side of the sleeve is provided with a Velcro fleece surface, the edge of the sleeve is provided with a docking piece, and the side of the docking piece facing away from the fleece surface is provided with a Velcro hook surface. The special structure of the Velcro that can be repeatedly removed facilitates the removal, adjustment, separation or re-docking of the sleeve, so as to completely and stably wrap the finished product original configuration liquid bag or blood filter, so as to increase the constant temperature or low temperature effect.

[0022] Preferably, the docking pieces are provided in plurality, and the sides of the plurality of docking pieces are docking holes, and the docking holes are adaptively arranged corresponding to the size of the connection between the blood filter and the existing blood filter. During the docking process between the sleeve and the blood filter, the docking holes provide a vacant area for the connection to avoid the connection being hindered by the connection, so that the sleeve is stably and tightly wrapped around the outside of the blood filter.

[0023] Preferably, both sides of the sleeve are provided with docking pieces, and when the docking pieces are connected to the sleeve, the docking pieces on both sides are arranged alternately. When the two docking pieces are alternately docked on the outer side of the sleeve, the docking pieces on both sides do not interfere with each other, and the processing cost of repeated docking pieces can be effectively saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of Example 1 of the continuous blood purification temperature control device of the utility model.

[0025] Figure 2 Schematic diagram of the structure of the circulation tube in the embodiment.

[0026] Figure 3 It is a structural schematic diagram of the casing in the open state in the embodiment.

[0027] Figure 4 Schematic diagram of the structure of the connection state between the control device and the sleeve body in the embodiment.

[0028] Figure 5 This is a schematic diagram of the structure of Example 2 of the continuous blood purification temperature control device of the utility model.

[0029] Figure numerals: 0, finished product original configuration liquid bag; 1, blood filter; 2, sleeve; 20, groove; 21, gap; 22, liquid inlet; 23, liquid outlet; 3, control device; 30, liquid guide tube; 31, liquid return tube; 4, circulation tube; 5, rough surface; 6, docking piece; 7, hook surface; 8, docking hole; 9, cooling patch. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings.

[0031] Embodiment 1:

[0032] like Figures 1 to 4 The continuous blood purification temperature control device shown includes a casing 2, a temperature control layer and a control device 3.

[0033] The sleeve body 2 is made of a flexible material (such as pure cotton, polyester or nylon). In this embodiment, in order to effectively maintain a constant temperature effect, the sleeve body 2 is made of pure cotton.

[0034] The temperature control layer is arranged on the inner layer of the sleeve 2, and the control device 3 is connected to the temperature control layer to control the real-time temperature. The sleeve 2 can be wrapped around and fixed on the outer side of the original configuration liquid bag 0 of the existing finished product.

[0035] Regarding the specific structure for adjusting the temperature, a circulating heat conduction, refrigeration method can be adopted, or a method of directly converting electric energy into heat or cold air can be adopted. In this embodiment, the temperature control layer is a circulation pipe 4 arranged in the casing 2, and the circulation pipe 4 is distributed in the casing 2 in a winding and folded manner. The casing 2 is provided with a liquid inlet 22 and a liquid outlet 23, and the two ends of the circulation pipe 4 are respectively connected to the liquid inlet 22 and the liquid outlet 23. A variable temperature water tank is arranged in the control device 3, one side of the variable temperature water tank is connected to the liquid inlet 22 through a liquid guide pipe 30, and the other side of the variable temperature water tank is connected to the liquid outlet 23 through a return liquid pipe 31.

[0036] Among them, the liquid guide tube 30 and the liquid inlet 22, as well as the liquid return tube 31 and the liquid outlet 23 are detachably connected, such as by using a threaded docking or a Luer interface insertion docking method, so as to facilitate the disinfection of the sleeve body 2. This embodiment adopts the Luer interface insertion docking method.

[0037] In addition, in order to meet the requirements of rapid cooling or heating, a cooling patch 9, a heating patch or a thermal wire may be further provided in the sleeve 2, and the cooling patch 9, the heating patch or the thermal wire is connected to the control device 3 through a circuit, and the cooling patch 9, the heating patch or the thermal wire is isolated from the temperature control layer.

[0038] Similarly, if a cooling patch 9, a heating patch or a heat-conducting wire is provided in the sleeve 2, the control device 3 is connected to these structures for quickly adjusting the temperature through a detachable circuit line. The connector of the circuit line can adopt a USB or DC power connector of the existing technology. Since the circuit line is an existing conventional technology, it is not specifically illustrated and described in this embodiment.

[0039] In order to further control the constant temperature or low temperature effect of the replacement fluid or dialysate, a temperature sensor and a temperature control module are provided in the sleeve 2 or the control device 3. In this embodiment, a temperature sensor is provided in the sleeve 2, and an intelligent temperature control module is provided in the control device 3.

[0040] In order to facilitate the hanging of the finished product original configuration liquid bag 0, a plurality of through grooves 20 are provided in the middle of the sleeve 2 for the hanging holes of the finished product original configuration liquid bag 0 to extend out. The sleeve 2 can be wrapped around the surface of the finished product original configuration liquid bag 0 from top to bottom, and a gap 21 is provided on the lower side of the sleeve 2 for the catheter to pass through.

[0041] Regarding the wrapping and docking method of the sleeve 2, an adhesive, Velcro or magnetic structure can be used. In this embodiment, a Velcro structure is used, that is, one side of the sleeve 2 is provided with a Velcro fur surface 5, the edge of the sleeve 2 is provided with a docking piece 6, and the side of the docking piece 6 facing away from the fur surface 5 is provided with a Velcro hook surface 7.

[0042] The following is the usage of this embodiment:

[0043] First, the sleeve 2 is opened, and the middle part of the sleeve 2 with the through groove 20 is placed at the hanging hole of the finished product original configuration liquid bag 0, and the sleeve 2 is turned over from top to bottom so that the sleeve 2 covers and wraps the surface of the finished product original configuration liquid bag 0; and the bag body where the hanging hole of the finished product original configuration liquid bag 0 is located is extended from the through groove 20, and the catheter is extended from the gap 21 below the sleeve 2; then, the docking piece 6 is turned over so that the hook surface 7 of the docking piece 6 covers and adheres to the rough surface 5 on the outer side of the sleeve 2, so as to achieve the docking of the sleeve 2 and the finished product original configuration liquid bag 0.

[0044] Finally, the liquid guide tube 30 is connected to the liquid inlet 22, the liquid return tube 31 is connected to the liquid outlet 23, and the power supply of the control device 3 is connected, the control device 3 is started, and the circuit of the above-mentioned rapid heating or cooling structure is connected, and whether heating or cooling treatment is needed is selected according to the patient. For ordinary patients, the liquid in the variable temperature water tank is gradually heated according to the pre-set program, and the liquid in the variable temperature water tank is transported to the circulation tube 4 through the liquid guide tube 30 and the liquid inlet 22, and after circulating, the liquid flows back to the control device 3 through the liquid outlet 23 and the liquid return tube 31, so that the temperature in the sleeve 2 gradually increases.

[0045] At the same time, the temperature sensor monitors the temperature of the casing 2 in real time, and transmits the temperature data to the temperature control module in real time. The temperature control module adjusts the temperature of the variable temperature water tank according to the temperature conditions until the casing 2 is heated to a suitable temperature.

[0046] When performing hypothermia treatment on patients with brain injury after cardiopulmonary resuscitation, the temperature in the variable temperature water tank is lowered, and the low-temperature liquid is transported to the circulation pipe 4 in accordance with the above method, and the low-temperature environment in the sleeve 2 is taken away and continuously maintained by circulating flow.

[0047] Embodiment 2:

[0048] like Figure 5 As shown, the technical contents of this embodiment 2 are basically the same as those of embodiment 1, and the technical differences between this embodiment 2 and embodiment 1 are:

[0049] The sleeve body 2 can surround and be fixed on the outer side of the existing blood filter 1 .

[0050] In addition, a plurality of docking pieces 6 are provided, and the sides of the plurality of docking pieces 6 are docking holes 8, and the docking holes 8 are adaptively arranged corresponding to the size of the connection between the blood filter 1 and the existing blood filter.

[0051] In addition, both sides of the sleeve body 2 are provided with docking pieces 6. When the docking pieces 6 are connected to the sleeve body 2, the docking pieces 6 on both sides are staggered with each other.

[0052] The following is the usage of this embodiment 2:

[0053] The sleeve body 2 is flipped sideways to wrap around the outside of the blood filter 1, and the docking pieces 6 on both sides are flipped, so that the connection between the blood filter 1 and the existing blood filter is located at the docking hole 8, and the hook surface 7 of the docking piece 6 covers and adheres to the rough surface 5 of the sleeve body 2, so as to achieve the docking of the sleeve body 2 and the blood filter 1.

[0054] The above is a preferred embodiment of the present invention. A person skilled in the art may make several modifications and improvements without departing from the principle of the present invention, and these modifications and improvements shall also be regarded as within the protection scope of the present invention.

Claims

1. A continuous blood purification temperature control device, characterized in that: The invention comprises a sleeve (2), a temperature control layer and a control device (3); the sleeve (2) is made of a flexible material; the temperature control layer is arranged on the inner layer of the sleeve (2); the control device (3) is connected to the temperature control layer to control the real-time temperature; the sleeve (2) can be wrapped around and fixed to the outer side of an existing finished product original configuration liquid bag (0) or a blood filter (1).

2. The continuous blood purification temperature control device according to claim 1, characterized in that: The sleeve (2) is provided with a plurality of through grooves (20) in the middle thereof through which the hanging holes of the finished product original configuration liquid bag (0) can extend. The sleeve (2) can be wrapped around the surface of the finished product original configuration liquid bag (0) from top to bottom. The lower side of the sleeve (2) is provided with a gap (21) through which the catheter can pass.

3. The continuous blood purification temperature control device according to claim 1, characterized in that: The temperature control layer is a circulation pipe (4) arranged in the casing (2), and the circulation pipe (4) is distributed in a winding and folded manner inside the casing (2). The casing (2) is provided with a liquid inlet (22) and a liquid outlet (23), and the two ends of the circulation pipe (4) are respectively connected to the liquid inlet (22) and the liquid outlet (23). A variable temperature water tank is arranged in the control device (3), one side of the variable temperature water tank is connected to the liquid inlet (22) via a liquid guide pipe (30), and the other side of the variable temperature water tank is connected to the liquid outlet (23) via a liquid return pipe (31).

4. The continuous blood purification temperature control device according to claim 3, characterized in that: A cooling patch (9) is also provided in the sleeve (2), and the cooling patch (9) is connected to the control device (3) via a circuit, and the cooling patch (9) is isolated from the temperature control layer.

5. The continuous blood purification temperature control device according to claim 3 or 4, characterized in that: A temperature sensor and a temperature control module are provided in the casing (2) or the control device (3).

6. The continuous blood purification temperature control device according to claim 2, characterized in that: One side of the sleeve (2) is provided with a Velcro fleece surface (5), an edge of the sleeve (2) is provided with a docking piece (6), and a Velcro hook surface (7) is provided on the side of the docking piece (6) facing away from the fleece surface (5).

7. The continuous blood purification temperature control device according to claim 6, characterized in that: A plurality of the docking pieces (6) are provided, and the sides of the plurality of the docking pieces (6) are docking holes (8), and the docking holes (8) are adaptively arranged corresponding to the size of the connection between the blood filter (1) and the existing blood filter.

8. The continuous blood purification temperature control device according to claim 7, characterized in that: Both sides of the sleeve body (2) are provided with butt joint pieces (6); when the butt joint pieces (6) and the sleeve body (2) are connected, the butt joint pieces (6) on both sides are arranged in an interlaced manner.

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